FAIRFAX, Virginia (August 10, 2004) - Exemplifying its commitment to be at the forefront of lubrication technology and the depth of its product offerings for the heavy-duty vehicle market, ExxonMobil today announced that four of its heavy-duty diesel engine oils have met the American Petroleum Institute's (API) new CI-4 Plus specification.

A modification of API's CI-4 standard, originally released in October 2002, CI-4 Plus licensed lubricants are required to deliver improved soot handling and shear stability performance in all engines. These improvements enable engine oils licensed under the API CI-4 Plus specification to better withstand the severity of the latest low-emission engines. The CI-4 Plus standard is scheduled to take effect September 1, 2004.

'Having our premium heavy-duty engines oils meet API's new CI-4 Plus standard, along with all major industry and OEM specifications, demonstrates how ExxonMobil continues to stand at the forefront of lubricant technology,' said Henrik Hansen, marketing manager - Americas, ExxonMobil Lubricants & Specialties. 'With the depth of our product offerings, we can meet any of our customers' needs, regardless if they operate a brand new truck with a low-emission engine or have an older truck that they rely on.'